{
  "manageEntity": {
    "action": "Update",
    "entityId": "321430592",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1fd04fe75f48125f1295957bab76e0d20077b385f176cbaceaac78a530ec30f9",
    "signature": "0x0f5982a3079793069ed63d9b4669b7ffacf5d7b78ed2882d2e1dac610383bb432b0958d9da106504a07d2ee9e5896d3de5f3dd81623fb4634cf1b727e9e881b11c",
    "signer": "0xce728805CE8D9389db39C026804151A65D5e8c71",
    "userId": "321430592"
  }
}